I have a Rev 1.1. It DOES have the XFX Stamped into the grill on the back.
I bought it on Newegg on February 2nd.
I bought the 2nd card from TigerDirect directly around Feb 10th.
It's a revision 1.2. It does NOT have the XFX Stamped into the back.
They are both identical apart from the XFX missing on one.
Both are reference.
Both have identical stock BIOS. Both are flashed with shader unlocks.
So you flashed to full 6970 on both cards or only the shader unlock? And what clocks are you seeing on the cards? Any discernable differences in overclocking or performance?